diff --git a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
index ced291fe0a37dd..9b7c127676e58b 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
@@ -522,7 +522,7 @@ protected void runRunningJob() throws AlterCancelException {
                 if (task.getFailedTimes() > 0) {
                     task.setFinished(true);
                     AgentTaskQueue.removeTask(task.getBackendId(), TTaskType.ALTER, task.getSignature());
-                    LOG.warn("schema change task failed: " + task.getErrorMsg());
+                    LOG.warn("schema change task failed: {}", task.getErrorMsg());
                     List<Long> failedBackends = failedTabletBackends.get(task.getTabletId());
                     if (failedBackends == null) {
                         failedBackends = Lists.newArrayList();
@@ -533,8 +533,8 @@ protected void runRunningJob() throws AlterCancelException {
                             .getReplicaAllocation(task.getPartitionId()).getTotalReplicaNum();
                     int failedTaskCount = failedBackends.size();
                     if (expectSucceedTaskNum - failedTaskCount < expectSucceedTaskNum / 2 + 1) {
-                        throw new AlterCancelException("schema change tasks failed on same tablet reach threshold "
-                                + failedTaskCount);
+                        throw new AlterCancelException(
+                                String.format("schema change tasks failed, error reason: %s", task.getErrorMsg()));
                     }
                 }
             }